tailieunhanh - Báo cáo y học: "Equipment review: New techniques for cardiac output measurement – oesophageal Doppler, Fick principle using carbon dioxide, and pulse contour analysis"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành y đề tài: Equipment review: New techniques for cardiac output measurement – oesophageal Doppler, Fick principle using carbon dioxide, and pulse contour analysis. | Critical Care June 2002 Vol 6 No 3 Berton and Cholley Review Equipment review New techniques for cardiac output measurement - oesophageal Doppler Fick principle using carbon dioxide and pulse contour analysis Christine Berton and Bernard Cholley Department of Anesthesiology and Intensive Care Hôpital Lariboisière Paris France Correspondence Bernard Cholley Published online 25 April 2002 Critical Care 2002 6 216-221 2002 BioMed Central Ltd Print ISSN 1364-8535 Online ISSN 1466-609X Abstract Measuring cardiac output is of paramount importance in the management of critically ill patients in the intensive care unit and of high risk surgical patients in the operating room. Alternatives to thermodilution are now available and are gaining acceptance among practitioners who have been trained almost exclusively in the use of the pulmonary artery catheter. The present review focuses on the principles advantages and limitations of oesophageal Doppler Fick principle applied to carbon dioxide and pulse contour analysis. No single method stands out or renders the others obsolete. By making cardiac output easily measurable however these techniques should all contribute to improvement in haemodynamic management. Keywords cardiac output Fick principle monitoring oesophageal Doppler pulse contour analysis stroke volume thermodilution Intensive and perioperative care share a common goal namely to maintain adequate organ perfusion throughout the body during the time course of critical illness or surgery. Adequate organ perfusion implies two different physical properties perfusion pressure that is sufficiently high to force blood into the capillaries of all organs and sufficient flow to deliver oxygen and substrates and to remove carbon dioxide and other metabolic byproducts. However in many instances the only aspect of perfusion that is carefully monitored is pressure whereas flow is simply ignored. One of the reasons for this may be related to the